A book says it's wrong to be gay?

I'm not gay at all, but some piece of **** fairly tale says it's wrong to be gay and people believe that? Why do you people live your life by a book? Why are you people so worried about dying and not about living? Why are you so biased and ignorant? I'm only fourteen years old but Atheism is really starting to attract me. Thanks for the answers from both points of view.